Horner syndrome

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Background

Scheme showing sympathetic and parasympathetic innervation of the pupil and sites of a lesion in Horner's syndrome.
  • Involves lesion anywhere along the sympathetic tract:
    • Central (Hypothalamus, brainstem, spinal cord)
    • Preganglionic (Pulmonary apex)
    • Postganglionic (Superior cervical ganglion, ICA, skull base, cavernous sinus)


Clinical Features

Left-sided Horner's syndrome

Differential Diagnosis

Etiology

Evaluation

Management

See Also

References